Methods and systems for controlling rate and output of heat exchanger fluids
First Claim
1. A method of maintaining a desired first parameter of a controlled fluid in a heat exchanger system, comprising the steps of:
- measuring a second parameter of the controlled fluid;
varying an input to a first parameter actuator as a function of the second parameter of the controlled fluid;
measuring the first parameter of the controlled fluid; and
varying the input to the first parameter actuator to reduce an error of the first parameter of the controlled fluid indicative of the difference between the measured and desired values of first parameter.
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Accused Products
Abstract
Systems, methods and devices are disclosed for controlling fluids parameters in a heat exchanger. In one embodiment, an apparatus for controlling a heat exchanger system may include a first controller and a second controller. Each controller may control an actuator associated with a parameter of the heat exchanger system. Each controller may include a feedback gain and a cross coupling gain. The cross coupling gain may cross couple the system inputs to the actuators. The parameters are the temperature and the mass flow rate. The heat exchanges fluids are the heat transfer fluid and the controlled fluid.
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Citations
78 Claims
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1. A method of maintaining a desired first parameter of a controlled fluid in a heat exchanger system, comprising the steps of:
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measuring a second parameter of the controlled fluid;
varying an input to a first parameter actuator as a function of the second parameter of the controlled fluid;
measuring the first parameter of the controlled fluid; and
varying the input to the first parameter actuator to reduce an error of the first parameter of the controlled fluid indicative of the difference between the measured and desired values of first parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of maintaining a desired temperature of a controlled fluid in a heat exchanger system, comprising the steps of:
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measuring a parameter of the controlled fluid;
varying an input to a temperature actuator as a function of the parameter of the controlled fluid;
measuring a temperature of the controlled fluid; and
varying the input to the temperature actuator to reduce an error of the temperature of the controlled fluid indicative of the difference between the measured and desired temperature. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of maintaining desired parameters of a controlled fluid in a heat exchanger system, wherein the controlled fluid has one or more parameters, and the heat exchanger includes a heat transfer fluid having a parameter, the method comprising the steps of:
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measuring a first parameter of the controlled fluid; and
varying an input to a first actuator of the parameter of the heat transfer fluid as a function of an error of the first parameter of the controlled fluid indicative of the difference between the measured and desired values of the first parameter of the controlled fluid. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method of maintaining desired parameters among a plurality of parameters of a heat exchanger system, wherein the heat exchanger system includes a first fluid having one or more parameters and a second fluid having one or more parameters, the method comprising the steps of:
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measuring a first parameter of the first fluid; and
varying an input to a first actuator of the second fluid as a function of an error of the first parameter of the first fluid indicative of the difference between the measured and desired values of the first parameter of the first fluid. - View Dependent Claims (28, 29, 30, 31, 32)
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33. An apparatus for controlling one or more parameters of a first fluid or a second fluid of a heat exchanger system, wherein the heat exchanger includes a first fluid having one or more parameters and a second fluid having one or more parameters, the apparatus comprising:
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a first controller controlling a first parameter of the heat exchanger system;
a second controller controlling a second parameter of the heat exchanger system; and
a first cross coupling gain coupling an input of the first controller and an output of the second controller. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. An apparatus for controlling one or more parameters of a heat exchanger system, wherein the heat exchanger includes a heat transfer fluid and a controlled fluid, the apparatus comprising:
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a first controller controlling an input to a first actuator, wherein the first actuator controls a first parameter of the heat exchanger system;
a second controller controlling an input to a second actuator, wherein the second actuator controls a second parameter of the heat exchanger system; and
a first cross coupling gain coupling an input of the first controller and an output of the second controller. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. A system for controlling one or more parameters of a heat exchanger, wherein the heat exchanger includes a heat transfer fluid and a controlled fluid, the system comprising:
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a heat exchanger;
a first actuator, wherein the first actuator controls a first parameter of the heat exchanger;
a second actuator, wherein the second actuator controls a second parameter of the heat exchanger;
a first parameter monitor;
a second parameter monitor; and
a controller for controlling the heat exchanger, the controller comprising;
a first controller controlling an input to the first actuator;
a second controller controlling an input to a second actuator; and
a first cross coupling gain coupling the first controller and the second controller. - View Dependent Claims (66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
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Specification